This record tracks a ransomware attack claimed by the
qilin group against
Montana Civil Contractors. It collects the publicly disclosed attack details — sector, location and
timeline — as published on the operator's leak site and indexed by Dark Eye.
Window Zero
EXPOSURE GAP
Window Zero is the time the breach stayed in the open before
anyone said so — the gap between when the attack was first discovered
on the operator's leak site (t1) and when it was publicly disclosed (t2).
The wider this window, the longer victims, staff and customers were exposed with no warning.
0days open
t1 · Published
t2 · Pending
Business Category
Services
Published
September 15, 2026
Disclosed / Notified
Not disclosed yet
Attack Summary
www.montanacivil.com operates within the Services sector and is situated in the United States, providing civil-focused organizational services and solutions. The entity is cataloged within this threat-intelligence index under the designation of ransomware victim. Its listing is directly associated with the threat actor qilin, indicating a cybersecurity incident classification tied to this adversary group. This description adheres to neutral, encyclopedic standards for catalog entries, focusing on verified entity attributes and the documented threat association without elaborating on unconfirmed technical details or incident specifics.
Leak Screenshots
1 CAPTURED
Captured directly from the operator's leak site by our collector, last checked 2026-09-15. Verdict evidence: [M1] Published
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Dark Web Exposure
Findings for montanacivil.com
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
12
found in Traditional breaches
2
found in Ransomware leaks
EPA @tamata_data.zip
DBs w MTDT · breach
••• emails
Arandell Corp
medusa · ransomware
••• emails
Email Panther @dbworldcloud.7z
DBs w MTDT · breach
••• emails
linkedIN_2.7z.001
DBs Backup · breach
••• emails
UnderArmour_BF_.7z.001
Database World ROC · breach
••• emails
Database World ROC · breach
••• emails
B F R e p o V 3 F i l e s · breach
••• emails
Database World ROC · breach
••• emails
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